It has been five days since Jishi Mountain** in Linxia Prefecture, Gansu Province, but the damage and impact it has caused are still continuing, and the current incident occurred in the middle of the night at 6A magnitude 2 earthquake has killed 148 people. Shortly after the occurrence in Gansu, on December 19, 5Magnitude 5**, hypocenter depth 10 km. According to the Indonesian Meteorology, Climatology and Geophysics Agency, 5Level 5**....
In less than 48 hours, ** happened in all three places, and one can't help but wonder: has ** been more frequent than ever late?Has the Earth entered an active period?
Has it become more this year?
The biggest of the year were the two strong earthquakes that struck Turkey in February, with two consecutive 7The magnitude 8 earthquake brought huge losses to the lives and property of the local people.
But to answer the question of whether the number of ** times this year has become more and more?Or has it become more frequent in recent years?You need to stretch the timeline a little longer.
According to the amount of energy released by different sources, the magnitude is divided into nine magnitudes, which are generally less than 2Level 5 ** person has no feeling, 2People above level 5 have feelings, while 45-6 magnitude becomes a moderately strong earthquake, which can cause damage, more than 6 and less than 7 is a strong earthquake, and 7 and above is a large **.
According to statistics from the United States Geological Survey (USGS), from 2000 to 2023, a total of 1660,000 times 4Level 5 and above**, although there are periodic changes, the trend of continuous growth is not obvious.
It can be seen that since 2000, there have been an average of more than 6,900 occurrences per year worldwide4Level 5 or above**, which means that there will be about 19 destructive ** times a day around the world, our earth has been in vibration mode, and the earth's crust has been moving. From the beginning of 2023 to December 19, there have been 7,132**, which is not a significant improvement compared to other years.
If we look at the strong earthquake data, since 2000, there have been an average of 15 magnitude 7 and above ** per year in the world, and 19 ** of magnitude 7 and above have occurred since the beginning of this year, 14 of which occurred in the first half of the year. And compared with 24 times in 2010 and 20 times in 2011, there has been no significant upward trend in recent years.
According to the United States Geological Survey, the reason why people feel that it has become more and more frequent in recent years is mainly due to the improvement of monitoring and early warning technology. At the same time, because of the trauma of the great **, so people's attention to the ** has also increased, as the Internet makes the news spread faster and faster, more people can know where it happened in the first time, which will also cause people to a certain extent to feel more frequent than before.
These places around the world are most likely to occur**.
* Strong suddenness, large damage, known as the natural disaster "first of the group", in the face of the sudden disaster of the earth shaking the mountains, people are often unable to escape, the survival rate is low, for the sudden natural disaster, we seem to have to accept.
However, it does not occur in all regions of the world**, and like the distribution of volcanoes, it is mainly concentrated in areas where plates interact. At present, there are three main belts in the world: the Pacific Rim Belt, the Eurasian Belt and the Mid-Ocean Ridge Belt. There is also a small number of large ** occurring in the interior of the plate, mainly concentrated in the large active fault zone and its vicinity, and the Tangshan ** in 1976 belongs to this type.
We counted 45 and above**, and selected the top 20 countries with the most occurrences, it can be seen that Indonesia and Japan are indeed the countries with the most ** times in the world. Indonesia, in particular, has had more than 20,000 occurrences since 2000** above level 5, with an average of 23 games.
Neighboring Japan is also a volcanic, ** country, with nearly 500 events occurring every year4Level 5 or higher**. In addition, there are countries such as the Philippines in Asia, Papua New Guinea, Tonga, Vanuatu, New Zealand, and the Solomon Islands in Oceania, Chile in South America, and Alaska in North America.
will be the 4 that has happened globally in the past yearLevel 5 and above are projected on the map in the form of an origin, forming a rough map of the distribution of ** bands on a global scale. Different zones divide the Earth into distinct plates. Almost all of these frequent countries are located in the Pacific Rim Volcanic Belt.
Geographically, Indonesia is located in the collision area of the Pacific Plate, the Indian Ocean Plate and the Eurasian Plate, and is also sandwiched between the Pacific Rim ** Belt and the Eurasian ** Belt, where crustal activities are frequent and intense, which is the main reason why Indonesia occurs every three or five times**.
China is located in the Pacific Rim plate, the Eurasian plate, the Indian Ocean plate and other plates, and it is also a region with frequent activities. According to relevant research, there are at least 495 ** fault zones distributed in China.
Statistics from the Ministry of Emergency Management show that from January to November this year, there were 75 cases of magnitude 4 and above and 7 of magnitude 5 and above in mainland China, of which the largest magnitude was Shaya 6 in Xinjiang on January 30Category 1**, the epicenters are all located in sparsely populated areas, and no major damage has been caused.
At present, it seems that the first time in Jishi Mountain, Linxia Prefecture, Gansu Province may become the largest earthquake in mainland China this year, Xu Xiwei, founding president of the National Institute of Natural Disaster Prevention and Control, and professor of China University of Geosciences, said in an interview on the 19th that the epicenter of Jishishan County, Gansu Province, is located on the eastern edge of the Qinghai-Tibet Plateau, which is a part of the north-south zone.
In recent years, the damage caused by ** has weakened.
As of 8 o'clock on the 22nd, Gansu Jishi Mountain 6Level 2** has killed 148 people. Sun Shihong, a researcher at China's Taiwan Network Center, told the city that due to the fact that there are many civil brick and wood structure houses in the local area, the earthquake resistance is not strong, and the earthquake area is relatively densely populated, and it occurs in the middle of the night, and the superimposed geological environment is more complex, and the landslides, collapses and other geological disasters brought by the ** are more serious, resulting in the ** caused major personnel **.
From a global perspective, thanks to the progress of rescue forces and the improvement of early warning technology, the number of deaths caused by disasters has generally shown a weakening trend in recent years. Comparing the data of the past 10 years with the previous 10 years, it can be found that although the number of ** has increased, the overall number of ** caused by ** has decreased, which also shows that the overall earthquake resistance has improved on a global scale.
In 2022, global disasters** caused a total of 2,068 deaths, 160,000 people were injured, both of which were lower than the previous year, and were mainly due to secondary disasters such as landslides and the destruction and collapse of buildings.
Wang Jun, a professor at Sichuan University and director of the Sichuan Provincial Key Laboratory of Early Warning and Multi-hazard Early Warning Application Technology, told the first on the 19th that after this time, the rescue of all parties was very rapid, and the specific data of the various disaster situations caused by the first disaster were also very timely, providing the necessary information for the decision-making and further rescue of earthquake relief, which is an increasingly scientific and systematic manifestation of China's emergency response mechanism.
Natural disasters are merciless, people are merciful, the weather in the disaster area of Gansu is cold, I wish everyone safety.
Reference: Global Times, "Severe Cold Weather Brings Challenges, Rescue Forces Quickly Deploy, and All Parties in China Rush to the Disaster Area".
Data Journalism Editor: Chen Hualuo.
New ** design: Xu Xiao.
Proofreading: Wu Xingfa.